> I really like the early cleanup hook in your patches to cleanly unmap
> any outstanding granted pages before zapping the range on vm area
> destruction. It's something that I've been wanting to do for a while
> -- very stability-adding. ;)
Yep; as far as we could tell, this should clean up the
On 22 Mar 2007, at 02:28, Isaku Yamahata wrote:
When auto translate physmap mode, grant table works based on
pseudo physical address space. not virtual address space.
Please see gnttab_set_map/unmap_op() using __pa().
It is up to the guest kernel to map the pseudo physical address
to kernel/user
On Wed, Mar 21, 2007 at 11:29:29AM +, Derek Murray wrote:
> blktap appears to map each grant into kernel space and, when not
> using auto-translated mode, into user space as well. If it is using
> auto-translated mode, then the grant is only mapped into the kernel.
When auto translate phys
Am I correct in thinking that the use of the VM_FOREIGN flag, plus
the use of vm_private_data to store an array of struct page pointers,
enables the pages to be mapped into user space using get_user_pages()
(which is called by make_pages_present(), which is called by
do_mmap_pgoff())? Or is it the
On 21 Mar 2007, at 04:32, Isaku Yamahata wrote:
This patch doesn't work on ia64 and ppc because they doesn't support
GNTMAP_application_map which is x86 speicific. The flag doesn't make
sense for ia64 and ppc. (When auto_translated_physmap_mode is enabled,
GNTMAP_application_map isn't necessary.)
On Mon, Mar 19, 2007 at 10:40:18AM +, Derek Murray wrote:
> 1. gntdev.patch: This is the main driver, and associated header file.
This patch doesn't work on ia64 and ppc because they doesn't support
GNTMAP_application_map which is x86 speicific. The flag doesn't make
sense for ia64 and ppc. (
